Stationary waves are produced in $10\,m$ long stretched string. If the string Vibrates in $5$ segments and wave velocity $20\,m/s$ the frequency is ..... $Hz$
Medium
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${n_p}\, = \,\frac{{pV}}{{2l}}\, = \,\frac{{5 \times 20}}{{2 \times 10}}\,\, = 5{\mkern 1mu} {\mkern 1mu} Hz$
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